CN101638095B

CN101638095B - Method to control vehicular powertrain by monitoring map preview information

Info

Publication number: CN101638095B
Application number: CN2009101618072A
Authority: CN
Inventors: J·G·史密斯; T·W·扩; 张曼锋
Original assignee: GM Global Technology Operations LLC
Current assignee: GM Global Technology Operations LLC
Priority date: 2008-08-01
Filing date: 2009-08-03
Publication date: 2013-01-16
Anticipated expiration: 2029-08-03
Also published as: US8095290B2; DE102009035103A1; CN101638095A; DE102009035103B4; US20100030447A1

Abstract

The invention relates to a method for controlling a vehicular powertrain by monitoring a map preview information. A method of operating a vehicular powertrain including an internal combustion engine includes monitoring map preview information, determining a projected vehicle path based upon the map preview information, determining likely engine operation demands along the projected vehicle path, wherein the likely engine operation demands include likely required engine speeds and likely required engine loads, determining selectable engine operating modes at each likely engine operating demand, and executing engine operation based upon the selectable engine operating modes.

Description

Method by monitoring map preview information control vehicle powertrain

Technical field

The present invention relates to vehicle powertrain control.

Background technology

The description of this part only provides the background information relevant with the disclosure, may not consist of prior art.

Fuel efficiency and emission control are the key factors in modern vehicle design and the control program.Developed kinds of schemes and improved vehicle performance to improve these factors, included but not limited to the use of hybrid power energy, replaceable engine control scheme, adjusting shift time table and adopt various post-processing schemes.These schemes are generally speaking attempted to reduce consumption of fuel and control and are not wished accessory substance as waste gas from what vehicle was discharged.

Adopt the known dynamical system framework of hybrid power energy source to comprise torque generation device, comprise combustion engine and motor, these torque generation device pass to output link by gear arrangement with moment of torsion.The dynamical system of a typicalness comprises double mode compound separation electro-mechanical transmission, and it adopts input link and output link, and this input link receives the motion moment of torsion from traction machine power source (preferably combustion engine).Output link can functionally be connected to the driving system of the power actuated vehicle that tractive torque is delivered to.Motor as electrical motor or generator operation produces the moment of torsion that is input to change-speed box, and this moment of torsion is with irrelevant from the moment of torsion of combustion engine input.Motor can convert the vehicle energy by the vehicle powertrain transmission to the electric energy that can be stored in the electrical energy storage device.Control system is monitored from vehicle and operator's various inputs and is provided the operation of dynamical system to control, comprise control transmission operating state and gear shift, the control torque generation device, and the exchange of the electric power between adjusting electrical energy storage device and the motor, thereby management comprises the change-speed box output of moment of torsion and rotating speed.It is known being used for being equilibrated at different high efficiency manipulations under the electric power and the scheme of the high output function under burning, and these balance schemes allow the alerting ability under the different operating condition.By regulating all parts of dynamical system, vehicle can utilize the operating conditions that is particularly useful for certain operational modes, reclaim kinetic energy as potential energy and in energy storing device this potential energy of storage, thereby allow usually storage and after a while anti-emission carburetor or the zero-emission use of the energy that consumes by car brakeing.

The engine control scheme that is used for the raising vehicle performance adopts many forms.New work engine mechanism provides the means that increase efficient.For example, comprise that the active fuel management of cylinder deactivation is known, wherein vehicle control system is determined the moment of torsion that needs from the driving engine input, and only utilizes the part of the cylinder in the needed driving engine of this moment of torsion of effective supply.Another example comprises the engine valve operation of raising, and for example, variable lift valve operating starts the not throttle operation of control air inlet, thereby reduces the pumping loss relevant with throttle operation by opening valve.And variable valve timing is combined with variable spark timing and start the engine control mechanism and is allowed the management burning cycle, with the best combustion of coupling for the specific operation condition.In addition, advanced driving engine comprises the various control scheme, for example, utilizes in-cylinder pressure sensing and high speed processing and optimizes and regulate burning according to circulation.In addition, new-type combustion process provides the flexible combustion parameter with different optimum ranges.Burning in regular price gasoline and the diesel motor is carried out for a long time with equivalent and fuel-sean material air ratio respectively, thereby the compound that keeps the expectation needed two kinds of chemical constitutions of combustion reaction (fuel and oxide) is provided.Other combustion process is known, for example homogeneous charge compression ignition (HCCI), premixed charge ignition due to compression (PCCI) and stratified charge spark-ignition direct-injection (stratified charge SIDI) are by utilizing unconventional carbonate concentration, aerating mixture and ignition method more effectively to extract energy from inflation.In the above-mentioned improvement of engine control scheme each highly depends on vehicle operation conditions, such as engine speed and engine loading.

Each combustion process comprises that valid function is needed or is beneficial to scope and the condition of valid function.For example, the HCCI burning need to be designed to the combustion engine with the Otto cycle operation.The driving engine that is equipped with the cylinder fuel directly to spray operates with the controlled-auto-ignition pattern under the specific engines operating conditions, to realize improved fuel efficiency for engine.During the specific operation condition, adopt spark ignition system to replenish the auto-ignition combustion process.

The hcci engine that operates under the HCCI combustion pattern produces the aerating mixture of burning gases, air and fuel in combustion chamber, and during compression stroke, automatic ignition starts simultaneously from a plurality of firing points in the aerating mixture, thereby produces stable power stage, high heat efficiency and anti-emission carburetor.Burning high dilution and evenly distributing in whole aerating mixture, thus low burning gas temperature produced and usually than the NO of traditional spark ignition engine or traditional diesel motor _XThe NO that the discharging cardinal principle is lower _XDischarging.

HCCI has used conventional compression recently to illustrate in two-cycle gasoline engine.Will be understood that, in the two cycle engine combustion chamber from remaining high combustion gas ratio of previous cycle (namely, residual content) provide the reason of high mixture temperature, this high mixture temperature is necessary for the automatic ignition of the compound that impels high dilution.

In the four-stroke motor with traditional valve, residual content is low and is difficult to obtain HCCI when fractional load.When low and fractional load, cause that the known method of HCCI comprises: 1) inlet air heating; 2) variable-compression; With 3) gasoline mixed to produce than gasoline with ignition improver more hold ignitable compound.In all said methods, the engine speed that HCCI can obtain is relative with the scope of load narrow.In four-stroke gasoline engine, used the HCCI that spreading range is shown with the variable valve actuation of certain valve control program, described valve control program realizes the high afterflaming proportion of products from previous combustion cycle, and this high afterflaming proportion of products is necessary for the HCCI of high dilution compound.Utilize this valve scheme, use conventional compression ratio to expand significantly engine speed and the load range that HCCI can realize.During being included in exhaust stroke, a kind of such valve scheme catches and recompresses waste gas by means of closing exhaust valve in advance.Such valve control can be implemented with variable cam phasers and secondary lift cams.

PCCI is engine operation mode well known in the art and is the engine operation mode that is similar to aforementioned HCCI pattern.It will be appreciated by those skilled in the art that PCCI is the diesel oil equivalent of the HCCI that operates basically in engine petrol.Compare with the diesel motor that operates under the poor operation of routine, can realize reasonable engine emission result with the operation of specific speed and load range and with the diesel motor of PCCI mode operation.

Stratified charge SIDI (stratified charge SIDI) also is engine combustion pattern well known in the art and is the means of improving engine performance under the specific operation condition.It will be appreciated by those skilled in the art that, stratified charge SIDI is included in the specific operation scope with gasoline direct in the cylinder and on purpose forms concentration and the pattern that the active combustion event that acts on piston is managed spark light-up plug fuel-air mixture on every side regularly the time, thus the increase engine efficiency.

The above-mentioned engine combustion process height that improves vehicle performance depends on engine design and vehicle operation conditions, particularly, and the engine loading that engine speed and driving engine need.The imagination several different methods is processed and can from the information of vehicle sensors acquisition, such as the speed of a motor vehicle, engine speed, output torque etc., be estimated that with predictability ground vehicle operation conditions is beneficial to effectively and the low emission vehicle operation.This method can be estimated the condition that changes and to the short-term effect of vehicle based on the variation that comes from the vehicle sensors reading and rate of change.Although these short term projections of vehicle operation conditions are useful for management intermediate combustion pattern and reaction, they are still basically conservative.

The various electronicallies of following the tracks of vehicle location and vehicle location and geography, road, traffic or out of Memory being coordinated are known.Monitor this data and be commonly referred to the employing map preview information.But the preferred and electron gain means that are used for finishing this data acquisition comprise with the means of following the tracks of vehicle mobile, based on the data of the wireless acquisition of internet process, vehicle-vehicle communication is communicated by letter with vehicle-basic design and other remote computation source with global positioning system (GPS) and electronic chart, the coordination of numerical map software.These electronicallies provide the various information that can be used in based on vehicle is operating or the particular case of environment that may will operate is regulated vehicle and power operation.The information that comes from this system comprises: category of roads, such as express highway, country road, parking area, sand-graved road etc.; The velocity limit of each distance of road; The traffic of each distance of road, comprise real-time estimation stop up, from the cooperation vehicle of experience traffic send portable phone pattern analysis information, other automobile, based on the prediction of possible peak traffic or particular event (for example, sport) traffic; Road grade; Road curvature; The position of traffic signal lamp and state, signal, construction area mark, slow piece or other traffic guiding that affect Vehicle Driving Cycle are indicated; May affect the existence of the feature of travelling along the road distance or do not exist, for example exit ramp or truck weigh station; With time schedule, electronics Planning Calender or other prediction measure of analyzing vehicle or particular operators driving model, custom, registration.In addition, possible running route is estimated based on computational analysis or other means of destination, driver habit and the pattern of operator's input.

Summary of the invention

A kind of operation comprises the method for the vehicle powertrain of combustion engine, comprising: monitoring map preview information; Determine the projection vehicle route based on described map preview information; Determine possible power operation demand along described projection vehicle route, wherein possible power operation demand comprises possible required engine speed and possible required engine loading; Under each possible power operation demand, determine optional engine operation mode; And based on described optional engine operation mode execution power operation.

Description of drawings

The present invention can arrange middle employing entity form at some parts and parts, and preferred implementation of the present invention will be described in detail and shown in the accompanying drawing that is incorporated into subsequently this paper, accompanying drawing comprises:

Fig. 1 schematically shows according to exemplary combustion engine of the present invention and control system;

Fig. 2 shows exemplary direct fuel-injection engine according to the present invention in the feasible engine speed of stratified charge SIDI operation mode and the operation in the load range with diagrammatic form;

Fig. 3 shows exemplary direct fuel-injection engine according to the present invention in the feasible engine speed of HCCI operation mode and the operation in the load range with diagrammatic form;

It is that this dynamical system comprises the double mode compound separation hybrid electromechanical speed variator that functionally is connected to driving engine and the first and second motors that Fig. 4 schematically shows exemplary electromechanical mixing dynamic force according to the present invention;

Fig. 5 is the schematic block diagram according to distributed hybrid power system control module of the present invention system;

Fig. 6 schematically shows according to example vehicle dynamical system of the present invention, wherein shows the input torque that applies along transmission assembly and the relation between the output torque;

Fig. 7 schematically shows known hybrid power system, according to the present invention, wherein shows the input torque that applies from driving engine and motor, also shows the input torque that applies along transmission assembly and the relation between the output torque;

Fig. 8 shows along the example vehicle of certain route running, and according to the present invention, wherein showing can be by operating the advantage that hybrid power system obtains according to obtainable road shape information;

Fig. 9 shows along the example vehicle of certain route running, and according to the present invention, wherein showing can be by the advantage of selecting engine operation mode to obtain in the hybrid power control program according to obtainable road shape information; With

Figure 10 shows according to exemplary information flow graph of the present invention, wherein shows map preview information and can how to be used for the operation of control dynamical system.

The specific embodiment

With reference now to accompanying drawing,, the content shown in it only is for some illustrative embodiments is described, but not in order to limit the present invention, Fig. 1 schematically shows according to the embodiment of the present invention combustion engine 10 and the control system 25 of structure.Shown embodiment is employed multi-cylinder, applied ignition, directly injection, gasoline, quartastroke engine with operation example as the part of overall control scheme, this combustion engine is suitable for moving under controlled automatic ignition program, and this automatic ignition program is also referred to as homogeneous charge, ignition due to compression (" HCCI ") pattern.Yet those skilled in the art are to be understood that and above point out that many heteroid driving engine embodiments can be benefited because of method of the present invention, and the invention is not restricted to illustrative embodiments as herein described.

In this exemplary patterns of the present invention, natural aspirate, four stroke, single cylinder, 0.55 liter, controlled-auto-ignition, gasoline direct injection fuel combustion have and are substantially 12 to 13 compression ratio, and this combustion engine is used for implementing obtaining of the listed various data of valve and fuel control and this paper.Unless otherwise stated, all these enforcements and obtaining are all supposed under reference conditions well known to those skilled in the art and are carried out.

Exemplary engine 10 comprises engine body and the engine case 27 of metal casting, and engine body has a plurality of cylinders that are formed on wherein, there is shown one of them.Each cylinder comprises the cylinder body of end-enclosed, and cylinder body has the movably reciprocating-piston 11 that is inserted in wherein.The combustion chamber 20 of variable volume forms in each cylinder, and by cylinder wall, moveable piston 11 with cover 27 and limit.Engine body preferably includes the flow of engine coolant body and flows through wherein coolant passage 29.The coolant temperature sensor 37 that can operate to monitor coolant fluid temperature is positioned at the appropriate position, and provides parameter signal to input to can be used for the control system 25 of control engine.Driving engine preferably includes known systems, and described known systems comprises external exhaust gas recirculation (EGR) valve and air inlet shutter (not shown).

Each moveable piston 11 comprises the device according to known piston formation method design, and comprises top and body, and the cylinder that body operates therein with self substantially is complementary.Piston has top or the crown areas that is exposed in the combustion chamber.Each piston is connected to bent axle 35 via pin 34 and connecting rod 33.Bent axle 35 rotatably is attached to engine body at the place, main bearing zone of the bottom of close engine body, so that bent axle can be around the axis rotation vertical with the longitudinal axis of each cylinder restriction.Crankshaft sensor 31 is placed in correct position, and it can operate to produce the signal that can be used for measuring by controller 25 crank shaft angle, and this signal can be converted to provide the observed reading of crankshaft revolution, speed and the acceleration/accel that can use in various control programs.During power operation, because piston is connected to rotation and the combustion process of bent axle 35 and bent axle 35, each piston 11 in the past complex form moves up and down in cylinder.The rotary moveable of bent axle has realized and will be converted to from the angle moment of torsion of bent axle output at the linear force that is applied between main combustion period on each piston that described angle moment of torsion can be passed to another device, for example vehicle transmission system.

Engine case 27 comprises the metal casting device with one or more air inlet ports 17 and one or more exhaust port 19, and air inlet port 17 and exhaust port 19 are all through-flow with combustion chamber 20.Air inlet port 17 supplies air to combustion chamber 20.(burning) gas after the burning flows out from combustion chamber 20 through exhaust port 19.Air stream by each air inlet port is by means of the actuating of one or more intake valves 21 is controlled.Burning gases by each exhaust port flow by means of the actuating of one or more exhaust valves 23 is controlled.

In intake valve 21 and the exhaust valve 23 each has head, and described head comprises the top that is exposed to combustion chamber.In the valve 21,23 each has the stem of valve that is connected to valve actuating apparatus.Valve actuating apparatus shown in 60 can operate to control each the opening and closing in the intake valve 21, and duaspiracle actuating device 70 can operate to control each the opening and closing in the exhaust valve 23.In the valve actuating apparatus 60,70 each comprises following apparatus, and this device signal is connected to control system 25 and can operates in order to jointly or separately control time, time length and the amplitude of the opening and closing of each valve.The first embodiment of exemplary engine comprises the crest places the cam system, and this crest places the cam system has variable lift control (VLC) device and variable cam phasing (VCP) device.This VCP device can operate to control each intake valve and the unlatching of each exhaust valve or the time of closing with respect to the crankshaft revolution position, and makes each valve opening fixed crankshaft angle time length.This exemplary VLC device can operate in order to the amplitude of amount of valve lift is controlled in two positions one: a position is the 3-5mm lift, opens time length 120-150 crank angle; Another position is the 9-12mm lift, opens time length 220-260 crank angle.Independent valve actuating apparatus can be realized identical function with identical effect.Valve actuating apparatus is preferably controlled according to predetermined control program by control system 25.The substituting variable valve actuating apparatus that for example comprises electric power fully flexibly or power hydraulic pressure device also can be used, and has independently opening and closing phase control and the further advantage of unconfined variable valve lift substantially in system's limit.In the particular aspects of this description control valve opening with the control program of closing.

Air enters air inlet port 17 by induction maniflod runner (runner) 50, the filtered air that induction maniflod runner 50 receives through known air gauging device and choking system (not shown).Waste gas flows to the dontake pipe 42 that comprises Abgassensor 40 from exhaust port 19, and Abgassensor 40 can operate to monitor the composition of waste gas streams and determine relative parameter.Abgassensor 40 can comprise any of some known sensing device, and described sensing device can operate to provide the parameter value of waste gas streams, comprises air/fuel ratio, or the observed reading of exhaust gas constituents, for example NO _X, CO, HC and other compositions.This system can comprise for the cylinder inner sensor 16 of monitoring combustion pressure or non-intrusion type pressure sensor or infer definite device (for example, passing through crankshaft accelerations) of determining pressure.Input offers control system 25 in sensor as aforementioned and the gauging device each as parameter with signal.These parameter inputs can be used for determining the combustion performance observed reading by control system.

Control system 25 preferably includes the subgroup of overall control system, and described overall control system can operate to provide the coherent system control to driving engine 10 and other system.In overall operation, control system 25 can operate with synthetic operation person's input, environmental conditions, engine operation parameters and combustion performance observed reading, and thereby execution algorithm obtains the target of control parameters to control various actuators, and described control parameter comprises such as fuel efficiency, discharging, performance and driving performance.Control system 25 is operably connected to a plurality of devices, and the operator controls or guide the operation of driving engine usually by these devices.When engine application was in vehicle, exemplary operator input comprised the control of cruising of accelerator pedal, brake pedal, Transmission gear finder and the speed of a motor vehicle.Control system can be communicated by letter with other controllers, sensor and actuator by local area network (LAN) bus (not shown), and local area network (LAN) bus preferably allows to control between the various controllers structured communication of parameter and instruction.

Control system 25 is operably connected to driving engine 10, and for a plurality of actuators that get parms data and pass through suitable interactive interface 45 control engines 10 from sensor.Control system 25 is inputted the reception engine torque command based on the operator, and produces the moment of torsion output of expectation.Use the exemplary engine operating parameter of the sensor sensing to comprise by control system 25: engine temperature (for example indicating by the method for monitoring engine coolant temperature), oil temperature or metal temperature; Crankshaft revolution speed (" RPM ") and position; Manifold absolute pressure; Ambient air and temperature; And environmental air pressure.The combustion performance observed reading generally includes the combustion parameter that records He derive, and comprises for example position of air/fuel ratio and peak combustion pressure.

Actuator by control system 25 controls comprises: fuel injector 12; VCP/VLC valve actuating apparatus 60,70; Be operably connected to the light-up plug 14 for control spark duration (spark dwell) and the ignition module of time; EGR (EGR) valve (independently not illustrating) and electronic throttle control module (not shown).Fuel injector 12 preferably can operate to inject fuel directly in each combustion chamber 20.The detail of exemplary direct injection fuel eductor is known, is not described in detail in this.Thereby control system 25 application light-up plugs 14 improve the timing of ignition control to exemplary engine in part engine speed and load operation scope.When exemplary engine operated under pure HCCI pattern, driving engine did not use the light-up plug of energising.Yet verified, to replenish the HCCI pattern be favourable to employ spark ignition under certain conditions, these conditions for example comprise, stop up preventing during cold start-up, and some aspect according to the present invention are under the low load operation condition that approaches low load limit.And, during verified high capacity operating limit in the HCCI pattern and to use applied ignition during the high speed/load operating conditions under the spark-ignition operation of throttling or not throttling be preferred.

Control system 25 preferably includes general purpose digital computer, and general purpose digital computer comprises microprocessor or central processing unit, read-only memory (ROM) (ROM), random access memory (RAM), electrically programmable read only memory (EPROM), high-frequency clock, modulus (A/D) and digital-to-analogue (D/A) circuit, input/output circuitry and device (I/O) and suitable Signal Regulation and buffer circuit substantially.Controller 25 has one group of control algorithm, and described control algorithm comprises resident program instructions and the calibration value that is stored among the ROM.

The algorithm that is used for engine control is performed during predetermined looped cycle usually, so that each algorithm is performed at least once in each looped cycle.The algorithm that is stored in the Nonvolatile memory devices is carried out by central processing unit, thereby and can operate to monitor from the input of sensing device and carry out control and diagnostic program operates with predetermined calibration value control engine.During continuing the power operation that carries out, looped cycle usually with regular interval for example per 3.125,6.25,12.5,25 and 100 milliseconds be performed.Alternatively, algorithm can be in response to event or interrupt request and is performed.

As mentioned above, according to engine construction, fuel type, control method etc., can be with the various engines operation mode such as the combustion engine of driving engine 10.Driving engine is controlled by the current engine speed that is operating of driving engine and engine loading to a great extent in the obtainable engine operation mode of any some operation.Fig. 2 shows exemplary direct fuel-injection engine according to the present invention in the feasible engine speed of stratified charge SIDI operation mode and the operation in the load range with diagrammatic form.Compare with homogeneous charge SIDI operation, shown in stratified charge SIDI operation be the relatively high pattern of fuel efficiency.Yet stratified charge SIDI operation is feasible under low engine speed and engine loading only.And the operation under the stratified charge SIDI increases NO _XProduct.Zone between single injecting type stratified charge SIDI and the homogeneous SIDI zone is marked as the zone of two injecting type stratified charge SIDI, according to other character of operation, for example adopts homogeneous charge SI operation to purge the NO that gathers from exhaust aftertreatment device _XThe needs of pollutants, this zone can comprise the operation with arbitrary operation mode." layering " shown in also should be noted that zone shows scope or the zone that can carry out stratified charge SIDI, but shown in the zone roughly any position can both select homogeneous charge SIDI operation.

Fig. 3 shows exemplary direct fuel-injection engine according to the present invention in the feasible engine speed of HCCI operation mode and the operation in the load range with diagrammatic form.As mentioned above, HCCI is the operation mode of energy efficient, and wherein, poor fuel ratio inflation is compressed into the automatic ignition point.Owing to do not use spark in the HCCI pattern, thereby success and timely inflation burning need the specified conditions scope in the combustion chamber, in order to keep stable burning.If owing to high engine speed and high engine loads cause occurring in the combustion chamber temperature rise and become such as the mistake of focus, then inflation may burn and be in the unordered process in advance, thereby the ring that has caused offsetting the benefit of HCCI operation is shaken and other fault.If do not have enough heat in the combustion chamber owing to low load operation makes, so automatic ignition may not can rule and occuring reliably.In addition, the operation under the layering HCCI increases NO _XProduct.Although shown in should also be noted that shown in the zone is the feasible scope of HCCI pattern or zone, shown in the zone roughly any position can both select the SI pattern.

Fig. 2 and Fig. 3 show, can bring the opportunity and risk that can realize to the selection of engine operation mode in some engine speed and load area.These Regional Representative can be by the exemplary chance that realizes by possible running route prediction engine speed and engine loading in combustion engine.Yet other method also is well known by persons skilled in the art.Known diverse ways can be used for control and regulates combustion process.For example, as mentioned above, following method is known, wherein can be during the low load operation of driving engine shifter cylinder with fuel saving.By method disclosed herein, the expection of the changes in environmental conditions that can may travel according to vehicle opens and closes cylinder.Reducing the combustion temperature in the combustion chamber with the EGR loop is known in order to reduce noxious emission.Similarly, ejecting water in the combustion chamber for the combustion temperature that reduces in the combustion chamber also is known to be used for identical purpose.These engine operation mode can be regulated based on engine speed and the engine loading of prediction.Many engine operation mode are well known in the art, and example as herein described only is used for illustration purpose, the invention is not restricted to the specific embodiment as herein described.

Figure 4 and 5 show exemplary electromechanical mixing dynamic force.It is that it comprises the double mode compound hybrid electromechanical speed variator 110 that separates that functionally is connected to driving engine 114 and the first and second motors (' MG-A ') 156 and (' MG-B ') 172 that exemplary electromechanical mixing dynamic force according to the present invention has been shown among Fig. 4.Driving engine 114 and the first and

second motors

156 and 172 each produce the power that can be delivered to change-speed box 110.Use respectively T from this paper _I, T _AAnd T _BThe expression input torque and use respectively N _I, N _AAnd N _BThe speed aspect of expression is described the power that is produced and be delivered to change-speed box 110 by driving engine 114 and the first and

second motors

156 and 172.

Exemplary engine 114 comprises and optionally operates under some states to transfer torque to the multi-cylinder engine of change-speed box 110 by input shaft 112, and it can be applied ignition or compression ignition engine.Driving engine 114 comprises the bent axle (not shown) of the input shaft 112 that functionally is connected to change-speed box 110.The rotating speed of tachogen 111 monitoring input shafts 112.Owing to be provided with the torque consumption parts on the input shaft 112 between driving engine 114 and the change-speed box 110, for example Hydraulic Pump (not shown) and/or torque management device (not shown), thus from the power (comprising rotating speed and output torque) of driving engine 114 outputs can with the input speed N of change-speed box 110 _IWith input torque T _IDifferent.

Exemplary change-speed box 110 comprises three cover compound planet gears 124,126 and 128, and four alternative torque transmitters that engage, that is, and and power-transfer clutch C1 170, C2162, C3 173 and C4 175.Use such as this paper, the friction torque transfer device of clutch finger any type for example, comprises one chip or compound lamella clutch or clutch pack (packs), band clutch, and drg.Preferably the hydraulic control circuit 142 by transmission control module (hereinafter ' TCM ') 117 controls can operate with the control clutch state.Power-transfer clutch C2 162 and C4 175 preferably include the spin friction power-transfer clutch of hydraulic applications.Power-transfer clutch C1170 and C3 173 preferably include the anchor fitting of the fluid control that can optionally be connected to (ground to) change-speed box case 168.Each power-transfer clutch C1 170, C2 162, and C3 173 and C4 175 are hydraulic applications preferably, optionally receive the hydraulic fluid of pressurization by hydraulic control circuit 142.

The first and

second motors

156 and 172 preferably include three-phase AC motor and

corresponding resolver

180 and 182, and each motor comprises stator (not shown) and rotor (not shown).The motor stator of each motor is connected to the outside of change-speed box case 168, and comprises stator core, and this stator core has the wound form electricity winding from its extension.The rotor supports of the first motor 156 functionally is being connected on the hub plate gear of axle 160 by the second compound planet gear 126.The rotor of the second motor 172 is fixedly attached to cover propeller boss 166.

Each

resolver

180 and 182 preferably includes the variable reluctance device, and this variable reluctance device comprises resolver stator (not shown) and resolver rotor (not shown).Resolver 180 and 182 is suitably located and is assembled on each first and second motor 156 and 172.Be connected to each

resolver

180 and 182 stator operation in the stator of the first and second motors 156 and 172.Be connected to the resolver rotor operation on the rotor of corresponding the first and second motors 156 and 172.Each

resolver

180 and 182 is connected to variator power converter control module (hereinafter ' TPIM ') 119 with signal and operating mode, and each sensing and monitor the resolver rotor with respect to the position of rotation of resolver stator, thereby monitor the first and

second motors

156 and 172 position of rotation separately.In addition, be compiled to provide respectively the rotative speed of the first and

second motors

156 and 172 from the signals of

resolver

180 and 182 outputs, that is, and N _AAnd N _B

Change-speed box 110 comprises output link 164, and for example, axle, this output link are operably connected to the transmission system 190 of vehicle (not shown), thereby outputting power is offered wheel 193 (only showing one of them among Fig. 4).Outputting power is from output speed N _OWith output torque T _OThe aspect is characterized.Rotative speed and the hand of rotation of change-speed box output speed sensor 184 monitoring output links 164.Each wheel 193 preferably is equipped with the sensor 194 that is suitable for the monitoring wheel rotating speed, the output of this sensor is monitored by the control module of the distributed control module system that reference Fig. 5 describes, to be identified for braking the speed of a motor vehicle and the absolute and relative vehicle wheel rotational speed of control, traction control and vehicle acceleration management.

Input torque from driving engine 114 and the first and second motors 156 and 172 (is respectively T _I, T _AAnd T _B) be owing to producing from fuel or the energy that is stored in the electromotive force conversion the electrical energy storage device (hereinafter ' ESD ') 174.ESD 174 is connected to TPIM 119 by DC switching conductor 27 in high pressure DC mode.Switching conductor 127 comprises contact switch 138.When contact switch 138 closure, under normal operation, electric current can flow between ESD 174 and TPIM 119.When contact switch 138 is opened, the failure of current between ESD 174 and the TPIM 119.Torque command in response to the first and

second motors

156 and 172, TPIM119 by the switching conductor 129 with power delivery to the first motor 156 and from the first motor 156 transmission of electric energy, and TPIM 119 similarly by switching conductor 131 with power delivery to the second motor 172 and from the second motor 172 transmission of electric energy, to obtain input torque TA and TB.Are chargings or discharge to ESD 174 conveying electric currents or from ESD 174 outgoing currents according to ESD 174.

TPIM 119 comprises a pair of power inverter (not shown) and corresponding motor control module (not shown), the motor control module structure become to receive torque command and control change device state accordingly, thereby in order to provides motor driving or regeneration function to obtain input torque T _AAnd T _BPower inverter comprises known compensation three phase power electronics package, each device comprises a plurality of insulated gate bipolar transistor (not shown), be used for to become AC power from the DC power conversion of ESD 174 by high frequency conversion, in order to be a corresponding power supply in the first and second motors 156 and 172.Insulated gate bipolar transistor is configured for receiving the switching type power supply of control command.Each three phase electric machine every has a pair of insulated gate bipolar transistor mutually usually.The state of control insulated gate bipolar transistor is to provide the motor-driven machine tool can produce or the electric energy regeneration function.Three-phase inverter receives by corresponding DC switching conductor 127 or supply DC electric energy and convert thereof into three-phase AC electric energy or change from three-phase AC electric energy, described electric energy is sent to the first and

second motors

156 and 172 or send out from the first and

second motors

156 and 172, so that as motor or generator operation.

Fig. 5 is the scheme drawing of distributed control module system.Parts described below comprise the subgroup of overall vehicle control structure, and the coherent system control of exemplary hybrid power system shown in Figure 4 is provided.Information and input that distributed control module system synthesis is relevant; and execution algorithm is controlled various actuators; thereby realize the control target; described target comprises and fuel efficiency; discharging, performance, driving performance; and the relevant target of hardware protection, and described hardware comprises battery and the first and

second motors

156 and 172 of ESD 174.The distributed control module system comprises engine control module (hereinafter ' ECM ') 123, and TCM 117, battery pack control module (hereinafter ' BPCM ') 121, and TPIM 119.Mixing control module (hereinafter ' HCP ') 105 is ECM 123, and TCM 117, and BPCM 121 and TPIM 119 provide management control and coordinate.User interface (' UI ') 113 functionally is connected to a plurality of devices, and the operation of electromechanical mixing dynamic force system is controlled or commanded to vehicle operators by these devices.These devices comprise accelerator pedal 213 (' AP '), operator's brake pedal 212 (' BP '), Transmission gear finder 214 (' PRNDL ') and the speed of a motor vehicle (cruise) controller (not shown) that cruises.Transmission gear finder 214 can have the optional operating position of discrete number, comprises the hand of rotation of output link 164, to realize forward and backward one.

Above-mentioned control module communicates with other control module, sensor and actuator by local area network or LAN bus 106.LAN bus 106 allows to carry out between the various control modules structured communication of the state of operating parameter and actuator command signal.The concrete communication protocol that adopts is special-purpose.LAN bus 106 and suitable agreement between aforementioned control module and other control module, provide firmly write to each other and multi-control module mutual, described other control module provides functions such as the control of ABS (Anti-lock Braking System), tractive force and vehicle stabilization.The multichannel communication multiple telecommunication bus can be used for the signal redundancy and the integraty that improve communication speed and some degree are provided.Communication between the single control module also can realize by direct connection, for example by serial peripheral interface (' SPI ') bus (not shown).

HCP 105 provides the supervision and control of hybrid power system, is used for coordinating ECM123, and TCM 117, and TPIM 119, and the operation of BPCM 121.HCP 105 is according to from user interface 13 with comprise that the various incoming signals of the hybrid power system of ESD 174 determine operator's torque request (T _{O_REQ}), to the instruction output torque (T of driving system 190 _CMD), the instruction of driving engine input torque, the moment of torsion of change-speed box 110 transmits power-transfer clutch C1 170, and C2 162, and C3 163, the clutch moment of torque of C4 175, and the torque command of the first and second motors 156 and 172.TCM 117 functionally is connected to hydraulic control circuit 142 and various functions is provided, these functions comprise the various pressure sensor device (not shown) of monitoring and produce control signal and these control signals are sent to various screw actuator (not shown), thereby control is included in pressure switch and the control cock of hydraulic control circuit 142 inside.

ECM 123 functionally is connected to driving engine 114 and is used for obtaining data by a plurality of discrete circuits (representing with total bidirectional interface cable 135 for the sake of simplicity) from the sensor of driving engine 114 and control actuator.The driving engine input torque instruction that ECM 123 receives from HCP 105.ECM 123 is according to the real engine input torque TI that in time determines to offer at this time point change-speed box 110 based on engine speed and the load of monitoring, and it is transmitted to HCP 105.To determine to be input to the driving engine input speed of input shaft 112, it is converted into change-speed box input speed N from the input of tachogen 111 in ECM 123 monitoring _IThe input of ECM123 monitoring sensor (not shown) comprises determining, for example, and collector pressure, engine coolant temperature, ambient air temperature, and the state of other engine operating parameter of ambient pressure.For example, perhaps interchangeable according to collector pressure, can determine engine loading according to operator's input of monitoring acceleration pedal 213.ECM 123 produce and the move instruction signal with the control engine actuator, comprise, for example, fuel injector, ignition module, and throttle control module (they are all not shown).

TCM 117 functionally be connected to change-speed box 110 and monitoring from the input of sensor (not shown) to determine the state of transmission operating parameter.TCM 117 produces also, and the move instruction signal comprises control hydraulic circuit 142 with control change-speed box 110.Comprise the estimating clutch moment of torsion of each power-transfer clutch (that is, C1 170, and C2 162, and C3 173, and C4 175) and the rotation output speed N of output link 64 from the input of TCM 117 to HCP 105 _OCan adopt other actuator and sensor to come to provide additional information to HCP 105 for the control purpose from TCM 117.TCM 117 monitorings are from the input of pressure switch (not shown), and the gear shift screw actuator (not shown) of actuation pressure control screw actuator (not shown) and hydraulic circuit 142 optionally, optionally to activate each power-transfer clutch C1 170, C2 162, C3 173, with C4 175, thereby obtain various transmission operating range states, as mentioned below.

BPCM 121 signals are connected to the sensor (not shown) and comprise the ESD 174 of electric current and voltage parameter state with monitoring, thereby the information of the battery parameter state of expression ESD 174 is provided for HCP 105.The battery parameter state preferably includes battery state of charge, cell pressure, and battery temperature, and use scope P _{BAT_MM}To P _{BAT_MAX}The available battery power of expression.

Each control module ECM 123, TCM 117, and TPIM 119, and BPCM121 is preferably general purpose digital computer, comprising: microprocessor or central processing unit; Comprise read-only memory (ROM) (' ROM '), random access memory (' RAM '), the storage medium of EPROM (' EPROM '); High-frequency clock; Analog-digital conversion (' A/D ') and digital-to-analog conversion (' D/A ') circuit; Input/output circuitry and equipment (' I/O '); And appropriate signals is regulated and buffer circuit.Each control module has a cover control algorithm, comprises being stored in the storage medium and being used to each computing machine that separately resident program instructions and the calibration value of function are provided.Information transmission between the control module preferably utilizes LAN bus 106 and serial peripheral interface bus to realize.In the predefined circuit circulation, carry out control algorithm so that each algorithm is carried out once at least in each circuit cycle.The predetermined calibration value of algorithm utilization that is stored in the non-volatile memory devices is carried out by a central processing unit, with monitoring from the input of sensing device and carry out control and diagnostic program, thereby the operation of control actuator.During the hybrid power system ongoing operation, carry out circuit cycle with well-regulated interval, for example, per 3.125,6.25,12.5,25 and 100 milliseconds interval.Replacedly, can response events come execution algorithm.

Exemplary dynamical system optionally runs on a state in several opereating specification states; these states can be described by engine condition and transmission state; wherein engine condition comprises engine operating state (' ON ') and engine shutdown state (' OFF '); transmission state comprises a plurality of fixed drive ratio and continuous variable operational mode, with reference to the description of following table 1.Table 1

Each transmission operating range state is described in table 1, and represents to have used which particular clutch C1 170 for each opereating specification state, and C2 162, and C3 173, and C4 175.The first continuous variable pattern, that is, EVT pattern I or MI select by only using power-transfer clutch C1 170, with the external gear teeth " connection " with third planet gear cluster 128.Engine condition can be among ON (' MI_Eng_On ') or the OFF (' MI_Eng_Off ').The second continuous variable pattern, that is, EVT pattern II or MII select by only using power-transfer clutch C2162, axle 160 is connected to the pinion carrier of third planet gear cluster 128.Engine condition can be among ON (' MII_Eng_On ') or the OFF (' MII_Eng_Off ').For purposes of illustration, when engine condition was OFF, the driving engine input speed equaled 0 rev/min (' RPM '), that is, engine crankshaft does not rotate.The fixed drive ratio operation provides input-to output speed (that is, the N of change-speed box 110 _I/ N _O) fixing than the operation.The first fixed drive ratio operation (' FG1 ') is by using power-transfer clutch C1 170 and C4 175 selects.The second fixed drive ratio operation (' FG2 ') is by using power-transfer clutch C1 170 and C2 162 selects.The 3rd fixed drive ratio operation (' FG3 ') is by using power-transfer clutch C2 162 and C4 175 selects.The 4th fixed drive ratio operation (' FG4 ') is by using power-transfer clutch C2 162 and C3 173 selects.Because planetary wheel 124,126, and 128 transmitting ratio reduces, thus input-to output speed fixing than operation along with the increase of fixed drive ratio operation and increase.The first and

second motors

156 and 172 rotational speed N _AAnd N _BDepend on respectively the interior rotation of the mechanism that is limited by clutch, and the input speed that detects with input shaft 112 is proportional.

HCP 105 and one or more other control module be in response to being caught by user interface 113, and the operator by acceleration pedal 213 and brake pedal 212 inputs to determine instruction output torque T _CMDThereby, satisfy the operator's torque request T that will carry out at output link 164 places that passes to driving system 190 _{O_REQ}The acceleration/accel of final vehicle is subjected to the impact of other factors, and these factors comprise, for example, and road load, road grade, and vehicle mass.The opereating specification state of change-speed box 110 depends on the various performance characteristics based on dynamical system.This comprises the operator's torque request that is delivered to user interface 113 by acceleration pedal 213 and brake pedal 212, as previously described.The dynamical system torque demand that can produce according to the instruction of operation the first and second motors 156 under electric energy generation pattern or torque producing mode and 172 comes the decision range state.Can determine the opereating specification state by optimized algorithm or program, this algorithm or program be according to the operational requirements to power, battery state of charge, and the energy efficiency of driving engine 114 and the first and

second motors

156 and 172 is determined optimizer system efficient.Control system is managed moment of torsion input from driving engine 114 and the first and

second motors

156 and 172 according to the result of executed optimizer, thus optimization system efficient, with management fuel economy and battery charging.In addition, can determine operating mode according to the fault of parts or system.HCP 105 monitoring torque generation device, and be defined as realizing the desired output moment of torsion and need to be from the power of change-speed box 110 outputs, to satisfy operator's torque request.Should be clear from top description, ESD 174 and the first and

second motors

156 and 172 functionally are electrically connected to be used for the power stream between them.In addition, driving engine 114, the first and

second motors

156 and 172, and electro-mechanical transmission 110 mechanical connection functionally with transmitted power betwixt, thereby produce the power stream that outputs to output link 164.

Fig. 6 schematically shows according to example vehicle dynamical system of the present invention, shows the input torque that applies along transmission assembly and the relation between the output torque.Vehicle 310 comprises driving engine 320 and change-speed box 330.Under normal operation, comprise that vehicle accelerates, steady state operation or gradually deceleration, driving engine 320 provides input torque to change-speed box 330, change-speed box 330 converts the transmitting ratio (in automatic transmission with hydraulic torque converter, standing the loss relevant with tor-con) that input torque passes through change-speed box inside to output torque that power is provided to the driving system (not shown) of vehicle 310.Under engine brake operation, wherein the speed of a motor vehicle is offset by the operation driving engine and is controlled from the high output torque of driving system transmission, output torque is converted to the input torque of driving engine 320 by change-speed box 330, and in-engine friction and pumping force are revolted output torque or the reactive torque of opposing output torque are provided, thereby make car retardation.In above-mentioned any vehicle operating, driving engine provides and satisfies the torque demand needed moment of torsion relevant with output torque, is used for providing the longitudinal velocity control of vehicle.Under most of operating conditionss, driving engine is used for driving driving system, thereby although engine brake operation is envisioned for potential power operation, the present invention will discuss power operation usually for providing power to driving system.

Output torque depends on the operating conditions of vehicle and the road environment of vehicle operating to the impact of driving system.The size of output torque determines the size of the propulsive force of vehicle.It will be appreciated by those skilled in the art that the speed of object and acceleration/accel be act on the object make every effort to and the result.Object under balancing force will not experience acceleration (comprise slow down or accelerate with negative direction).Object under out-of-balance force will accelerate in the direction that larger power determines.Except the propulsive force that is applied by output torque, a plurality of other masterpieces are used for vehicle, comprise gravity, resistance and friction force.Thereby the longitudinal acceleration of vehicle is determined by the propulsive force that is provided by driving system and the balance that usually acts between other power that makes car retardation.Monitoring acts on or be about to act on environmental forces on the vehicle can provide prediction about the demand that will be produced by driving engine.

By monitor the information about vehicle-periphery with above-mentioned electronics package, can adopt a kind of method and other factors (for example road grade or traffic signal light condition) in conjunction with predicting Vehicle Driving Cycle, comprise vehicle route and the speed by this route, can make about may need by this route or the engine speed of experience and the prediction of engine loading.These possible engine speeds can be used in engine loading and are evaluated at the feasible different engine operation mode in each some place, and in addition, the engine mode in whole route under the foreseeable variation.Then engine mode by this route can be selected based on character of operation, for example fuel efficiency, discharging, safety, performance and driving performance.This prediction can enough statistical methods be made, for example determine the position of uphill line on the horizon and switch to and to react to this condition variation on the horizon than the pattern that operates under the high engine loads (for example, applied ignition equivalent fuel ratio pattern) from fuel effective model (for example HCCI when the poor fuel ratio) by preparing.In addition, this prediction can be made in real time, for example, if the traffic that the indication of inapparent route change stops in front.In this case, preferably can indicate the switching engine pattern to anti-emission carburetor, but more undesirable situation is to increase power mode, because the acceleration demand is unlikely in the situation of deceleration on the horizon existing.And this prediction can be made based on possibility, and for example the traffic lights in the busy scope can be based on other cooperation vehicle monitoring on the same road.In this example, if other vehicle of report route data shows that the lamp of convergence is green for a long time, the probability that is about to so stop to increase.Stop as mentioned describedly about expection, the possibility that can adopt the modulating signal of convergence to redden is come the making factor, and the engine operation mode of vehicle can be selected based on this factor.Thus, can be used in identification about the information of vehicle environmental and select for the actv. engine operation mode of vehicle operating.

Prediction along the environmental conditions of some projection vehicle routes can be carried out in various scopes.The projection vehicle route can be by supposing that simply vehicle will continue certain distance at current road and set forth.On the contrary, the projection vehicle route can map out all possible turning to, and this may make and comprise by the vehicle of distance vehicle front certain distance the possibility factor in the path that may follow in any analysis.The projection vehicle route can comprise by said method to be set or the destination of prediction, thereby and the projection vehicle route can limit possible route or travel by vehicle.Greater flexibility is provided when long projection vehicle route is selected between engine operation mode or hybrid power control program.Yet, may cause unfavorable vehicle to use about the uncertain or mal hypothesis of vehicle route.An example of this disavantage is if at first be projected in the bypass and then be defined as adopting and causing high NO owing to the high engine speed on the expection highway and load (ideal conditions that purges after-treatment device is provided) at the vehicle in the path on the highway _XThe high fuel efficiency pattern of discharging, thus NO be full of _XThe post-processing acquisition equipment.If vehicle departs from institute's projection path, skip road running, after departing from, may must instruction owe the ideal engine operation mode, with the vehicle route of error of compensation prediction.Certainty factor or the margin of safety can be used when select operating mode, to eliminate this potential disavantage.

Fig. 7 schematically shows known hybrid power system, according to the present invention, illustrates the input torque that applies from driving engine and motor, illustrates the input torque that applies along transmission assembly and the relation between the output torque.Hybrid drive vehicle adopts driving engine and at least one motor to realize providing power to unify recuperated energy to energy storing device to vehicle transmission system.Fig. 7 shows vehicle 410, and vehicle 410 comprises driving engine 420, change-speed box 430 and motor 440.Shown in the four-headed arrow between each element and mentioned above, come from the input torque of driving engine and motor and output torque can with forward or opposite sense apply, thereby reflected the above-mentioned optional function that can be used for hybrid power system.Hybrid power control system, hybrid power control module as indicated above, the speed of a motor vehicle and the dynamical system loading demand that monitoring needs also managed the hybrid power drive element and satisfied speed and loading demand to transmit required output torque, and the priority ranking according to one group of programming satisfies above-mentioned optional function simultaneously.

Method disclosed herein can be applicable to the management of hybrid power system.The possible speed of a motor vehicle and overall dynamical system load estimation can obtain by the analytical electron device, and be as indicated above.Based on these predictions on the possibility running route, algorithm in the hybrid power control system can be selected the hybrid power control program for this route, thus based on the possible speed of a motor vehicle and dynamical system load with select different hybrid power configurations according to various operator precedence order.Fig. 8 illustrates along the example vehicle of certain route running, according to the present invention, shows by operate the possible benefit of hybrid power system according to obtainable traffic information.Vehicle 500 edges comprise the route running in three highway sections: highway section A, smooth highway section; Highway section B, uphill way; With highway section C, the descending highway section.The example vehicle of route running shown in the edge will be reacted according to the input that obtains from onboard sensor in the situation of any information that does not have outside vehicle.For example, the speed of a motor vehicle and dynamical system load can instantaneously in time be monitored any, and known hybrid power control system regulates the operation of driving engine and motor, the condition of discovering with compensation.Some exemplary known vehicle also produce sensor with radar, vision system or other input and predict the existence on slope on the horizon.Yet the validity of this system is limited to the circuit of light, depends on that light, traffic or other situation may be insecure, and is limited to for immediately anticipating the slope simply control system.In disclosed method, can be used in the use of plan hybrid power drive element about the information of total length that may running route.For example, about Fig. 8, be equipped with the vehicle 500 of known sensor to travel along highway section A, thereby select the hybrid power system pattern based on the speed of a motor vehicle, the dynamical system load of perceiving and other factors (such as the state of charge of energy memory storage).Sensing when being about to be transitioned into highway section B, be equipped with the vehicle 500 of known sensor to be transitioned into the hybrid power system pattern based on the new speed of a motor vehicle, the dynamical system load of perceiving and other factors.At last, be equipped with the vehicle 500 of known sensor to be transitioned into the hybrid power system pattern based on the new speed of a motor vehicle, the dynamical system load of perceiving and other factors.Comparatively speaking, be equipped with and allow vehicle monitoring can analyze optional hybrid power system pattern along each highway section along the vehicle 500 of the electronics package of the road conditions of a fixed line, determine the factor (comprise fuel efficiency, discharging, driving performance and other factors) relevant with each pattern with balance, and can select the serial pattern coordinated, to utilize incompatible this route of finishing of most preferred modal sets.

In addition, disclosed method the difference that may need driving engine to provide based on hybrid power control system is provided may selects different engine operation mode by demand torque in the hybrid power control program.Fig. 9 illustrates along the example vehicle of certain route running, according to the present invention, shows by coming according to obtainable traffic information to select the possible benefit of engine operation mode in the hybrid power control program.Vehicle 600 is prepared along travelling on the slope aspect, and hybrid power control system is estimated the hybrid power system pattern of factor to determine to adopt when travelling along slope aspect.Be equipped with the vehicle 600 of known sensor will be along travelling on the slope aspect, thereby select the hybrid power system pattern based on the speed of a motor vehicle, the dynamical system load of perceiving and other factors (such as the state of charge of energy memory storage).Usually, the vehicle that senses the high capacity demand will select to process the engine mode of higher load, for example applied ignition equivalent fuel-air ratio pattern.Yet, the length that allows vehicle monitoring can determine the slope along the vehicle of the electronics package of the road conditions of this route is equipped with, determine that optional, the optional hybrid power system control that can select arranges (comprising the various engine operation mode that can use and the deduction of the gross energy that may exhaust from energy storing device), and regulate hybrid power system and control to compensate.In the example depicted in fig. 9, the vehicle 600 of perceiving long slope (ending at a B) may select to process the engine mode of higher load similarly, such as above-mentioned applied ignition equivalent fuel-air ratio pattern.Yet, if vehicle 600 is perceived the visite that ends at an A, may select so the engine operation mode (such as the HCCI pattern) of Energy Efficient and the boosting operation combination of motor, to satisfy the higher load demand on slope.In the situation by the obtainable increase information of disclosed method, carry out this balance of determining to comprise between the various engine operation mode between a kind of hybrid power system pattern and the another kind, comprise the deduction of the operator precedence order that every kind of pattern is implicit and come from the depleted of energy of energy storing device.

The example of Fig. 8 and Fig. 9 shows a plurality of purposes of hybrid power control program, can work about the information of vehicle-periphery, two width of cloth figure all illustration the relevant high power that needs of sloping impact and vehicle be load.Yet, it will be understood by those skilled in the art that by the discernible a plurality of environmental aspects of electronics package (such as transit mode and velocity limit) and can similarly show according to the impact on the speed of a motor vehicle and engine loading.The content of the present invention's impact on illustration slope in the example that provides be because illustrative in nature affects with the intuition of slope on vehicle, but the present invention is not intended to be limited to this exemplary condition.

Figure 10 shows the map preview information that illustrates according to the present invention and how can be used in the exemplary information flow graph that the control dynamical system operates.The exemplary various data flow that can comprise, process and produce have been described in flow of information 700, with the control vehicle powertrain.Node 710 comprises the pedal compiling, processes the pedal position about engine speed and the speed of a motor vehicle, to produce chaufeur requested torque or torque demand.At node 720, moment of torsion and combustion pattern management and optimization logic are processed torque demand according to GPS/ digital map information, traffic information and other relevant data.Node 720 also produces the change-speed box instruction and combustion pattern and engine torque command is associated with node 730.

At node 730, it is processed to produce according to the needed concrete driving engine instruction of moment of torsion that satisfies the demands of expectation combustion pattern to come from the instruction of node 720.Although flow of information 700 illustrates example process, disclosed method can be processed by described process, and this flow of information only provides for illustrative purposes.Can expect the various algorithm embodiments of disclosed method, and the present invention is not intended to be limited to the specific embodiment as herein described.

The present invention has described some preferred implementation and modification thereof.After reading and understanding specification sheets, those skilled in the art can expect further modification and possibility.Thereby the present invention is not intended to be limited to implement the contemplated disclosed specific embodiment of optimal mode of the present invention as being used for, but the present invention will comprise all embodiments that fall in the appended claims scope.

Claims

1. an operation comprises the method for the vehicle powertrain of explosive motor, comprising:

Monitoring map preview information;

Determine the projection vehicle route based on described map preview information;

Determine possible power operation demand along described projection vehicle route, wherein said possible power operation demand comprises possible required engine speed and possible required engine loading;

Under each possible power operation demand, determine optional engine operation mode; With

Carry out power operation based on described optional engine operation mode.

2. method according to claim 1 wherein, is describedly determined that optional engine operation mode comprises determine whether described driving engine can operate and the possible character of operation of definite described operation under homogeneous charge compression ignition mode.

3. method according to claim 1 wherein, is describedly determined that optional engine operation mode comprises determine whether described driving engine can operate and the possible character of operation of definite described operation under premixed charge ignition due to compression pattern.

4. method according to claim 1 wherein, is describedly determined that optional engine operation mode comprises determine whether described driving engine can operate and the possible character of operation of definite described operation under stratified charge spark-ignition direct-injection pattern.

5. method according to claim 1 wherein, is describedly determined that optional engine operation mode comprises determine whether described driving engine can operate and the possible character of operation of definite described operation under hybrid power system electric motor boosted pattern.

6. method according to claim 1 wherein, is describedly determined that optional engine operation mode comprises and is determined whether described driving engine can operate under the active fuel management mode, described active fuel management comprises the burning that stops in the described engine cylinder.

7. method according to claim 1 wherein, is describedly determined that optional engine operation mode comprises determine whether described driving engine can operate, and described emission control pattern employing measure reduces combustion temperature under the emission control pattern.

8. method according to claim 1 comprises that also the map-based pre-review information determines the hybrid power system control program; And wherein, describedly determine that optional engine operation mode comprises described optional engine operation mode is combined with described hybrid power system control program.

9. method according to claim 1, wherein, described monitoring map preview information comprises the static roadway characteristic of monitoring, and described static roadway characteristic comprises at least one in road grade, road curvature, road surface type, category of roads, the velocity limit of putting up, the density of population and the construction area position.

10. method according to claim 1, wherein, described monitoring map preview information comprises the monitoring real time status, described real time status comprises following at least one in every: transit mode comprises the peak pattern or the event traffic that is ranked; The traffic jam of reporting comprises and can pass through the block information that wireless network, vehicle-vehicle communication or vehicle-infrastructure-based communication obtains; And traffic signal state information.

11. method according to claim 1, wherein, described monitoring map preview information comprises monitoring possibility data, described possibility data comprise with traffic signal state, traffic jam and operator's behavior at least one relevant possibility data.

12. method according to claim 1, wherein, describedly carry out the possible character of operation that power operation comprises the described optional engine operation mode of balance based on described optional engine operation mode, described character of operation comprises fuel efficiency and discharging at least.

13. method according to claim 1, wherein, described monitoring map preview information comprises that in time schedule based on vehicle driving model, concrete operations person's driving model, registration, electronics Planning Calender and the concrete named destination at least one come the possible route or travel by vehicle of projection.

14. method according to claim 13 wherein, is describedly carried out the possible character of operation that power operation is included in the whole described possible described optional engine operation mode of route or travel by vehicle inner equilibrium based on described optional engine operation mode.

15. method according to claim 14, wherein, the possible character of operation of the described optional engine operation mode of described balance comprises the estimation character of operation, and described character of operation comprises fuel efficiency and discharging at least.

16. method according to claim 15, wherein, the possible character of operation of the described optional engine operation mode of described balance also comprises at least one in driving performance and the engine performance.

17. method according to claim 14, wherein, the possible character of operation of the described optional engine operation mode of described balance comprises based on certainty factor is used in the analysis of described possible route or travel by vehicle.

18. an operation comprises the method for the vehicle powertrain of explosive motor, comprising:

Monitoring map preview information;

Determine possible route or travel by vehicle based on described map preview information;

Determine possible power operation demand at the periodic points place along described possible route or travel by vehicle, wherein said possible power operation demand comprises possible required engine speed and possible required engine loading;

Under each possible power operation demand, determine the character of operation of optional engine operation mode; With

By making the engine control time schedule at the whole described possible described character of operation of route or travel by vehicle inner equilibrium.

19. a method that operates hybrid vehicle power train, described hybrid vehicle power train comprises explosive motor, motor and electro-mechanical transmission, and described electro-mechanical transmission optionally operates to satisfy the dynamical system operational requirements, and described method comprises:

Monitoring map preview information;

Determine possible dynamical system operational requirements along described possible route or travel by vehicle, wherein said possible dynamical system operational requirements comprises possible required engine speed and possible required engine loading;

Determine the character of operation of the optional engine operation mode that can obtain along described possible route or travel by vehicle;

Carry out balance based on described possible route or travel by vehicle to the described character of operation of described optional engine operation mode with by the potential energy use that described motor carries out; With

Make the hybrid power system control program based on described balance.